E46 front right calliper problem?

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Hey guys, got a bit of a problem with my Beamer..

For the last couple of months I've had a bit of trouble with breaking at high speeds (80+) my steering wheel has been wobbling like crazy. Ive taken it into mag n turbo who suggested I need new disc brakes n rotors, and put it through a WOF at a BMW place two weeks ago n it passed with flying colors - although was told I'd prob need to get my brakes looked at by the next WOF..

Was driving up to Foxton this weekend to meet and grab a steering wheel airbag n interior stuff off a fellow bimmersport member Allan, for my new steering wheel from M-Sport o.O on the way up I started getting the wobbles real badly even when I was just driving at high speeds and everyone in the car could feel it - a few pushes of the brakes fixed it up n it reduced to a small constant shudder but we made it to Foxton in one piece (still with the wobbles at braking at high speeds).

Allan while I was up there took off my wheel n checked it out - He was able to push the piston back with the screwdriver n rotor moved freely. When we reapplied the brake momentarily the piston once again wouldn't release n had to pry it back with the screwdriver..

Getting a lot of brake dust on my front right wheel and the shudder seems more constant and aggressive tan it was before.

Any suggestions as to what's going wrong, do I need a new calliper? Is there anything I can do to fix it up? Just passed my WOF last week so a bit weird I've "broken down" so soon

Thanks,

Sam

Flatmate stole my laptop charger so writing this on an iPad so sorry if it reads bad as.

[BM WORLD 1283]

get your lower arm rear bushes checked also the ball joints.

if they are worn they will cause wobbles and shimmy's etc

[[email protected] 0]

Anyway to find out what part of the calliper ain't working properly?

If it's just the seals then a repair kit will do.

If it's the piston then I'll have to get a new calliper or rebuilt calliper..

Thanks